Globe holder



n". E.. Rumi. GLOBE HOLDER. APLlcATioN man rss. 2o, 1922.

.- mma 906.51922,

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mfen'U/"f Har/jg E Raffle' E# 1247? #Je #Viga Patented Dee. 5, 1922.

lr fr f HARRY nnurrrn, or CHICAGO, immers. i

n GLOBE HOLDER.

r"Application filed-February 20, 1922- SeraLNo.' 537,750.

To all whom t may concer/n.: Y

Be it ,known that I, HARRY RUTTLE, .a citizen of the United States of America, and a resident of Chicago, county of Cook, and State of Illinois, have invented a new and useful Improvement in. Globe Holders, of which they following isra specification.

This invention relates to lighting fixtures and especially to means for detachably securing globes, shades and the like, .as for instance in connection withelectric .lighting systems. .y

Heretofore it has been customaryto provide shade and globe holders with a .flange of substantially cylindrical shape or the equivalent thereof provided with three radially disposed inwardly pointing screws to engage the neck or anged inner edge of the shade or globe. @It yhas been found that yin theuse of such devices as ordinarily applied in connection with fthe largerfsizes of globes .and particularly in outside service yas in street lighting, there lisgreat wastage on ac-` count of breakage resultingfrom improper settingzof the screws and from relative ex pansion and contraction of the interlocked members due :to variations in temperature whereby ythe lglobes L are cracked and ultimately broken. 'Moreoven such use of screwsfor holding globes is found to be wasteful of time and. labor fin connection with* maintenance, asl the,l globes have Vto be removed occasionally for cleaning andlfor renewal of the lamps, and the turning and adjustment of a plurality of screws takes a considerable amount of attention.

The main objects of this invention are to provide an improved form of globe holder adapted to facilitate and expedite access to the lamps and interchange of globes, and more particularly to provide an improved form of fastening mechanism adapted to grip the globe somewhat yieldingly and adapted for ready operation to engage or release the globe. A further obj ect is to provide such a fastening of simple and inexpen sive construction, adapted for application to standard globe holder frames already in use and also adapted for gripping and releasing the globe by a single manual operation as, for instance, the turning of a single screw.

An illustrative embodiment of this invention is shown in the accompanying` drawings, in which- Figure 1 is a vertical axialsection of a globe holder and globe mounted dependingly and,` showing the lamp in "dotted lines. igure 2 'is' a section on the line 2:42 of Figure l.

l`Figure 3 is an enlarged view of the manual clamp mainly in axial section on the line 3 3 of Figure In the construction shown in the drawings the globe l is held in rplace by the combined lamp socket housingand holder 2, comprising mainly a rigid annularframe or body part r3,' a resilient l.manually operable arcuate globe clamping part 4 secured to the part 3 in La manner hereinafter described and' a stationarily mounted karcuate globe engaging part -5 somewhat similar in shape to the part 4 andidisposed oppositely thereto. The members 41 and 5 mutually embrace the neck ly of the globe andextend nearly around the same, as shown in F ig. 2.

The holder 2 is secured rigidly to its support @by means of bolts, screws or the like 7 in the i'iat` base part 3', Although a depending arrangement of the globe is here,

shown as required for instance in ceiling work, it is to be understood that the holder may equally well be mounted uprightly on the top of a post, not shown, as frequently required for street lighting, in which case the hole 3l provides for draining 0H any moisture rtendingfto collect in yframe 3. The supportfisapertured or lhollow as `shown at 6 to accommodate the current supply wires, not shown. i

One of .the complementary `bow-shaped embracing members, namely the stationary bar 5 is in the formV of a somewhat yielding wire having its ends looped and secured to the inner side of the flange or frame 3 where they are held by screws or "bolts 8. @ne end of member 5 adjacent to the free end of member 4 extends appreciably past the adjacent bolt 8 and is loopedfback at 9 as shown in Figure 2.

The manually adjustable embracingmember 4 has one end secured substantially rig idly bythe bolt 8 which holds the corresponding end of bar 5. The opposite or free end of member 4 is provided with a fastening in the form of a thumb screw l0 adapted for securing same releasably against the outer side of the flange or frame 3 as clearly shown at the right on Figures l and 2. Said member 4 extends considerably past the screw l0 toward the loop 9`of bar 5 and is looped back at ll. The extremity of the screw-bolt 14 which is provided with a nut 15 as shown in Figure 3. The screwgvlO has a lrnurled head 10 and a shank 10l threaded to fit the correspondingly threaded.y

bolt 1e and also the threaded hole 16 in the flange oi fra-me 3.

The operation for installing a globe is as follows: The screw 10 is backed 'out of engagement with frame 3 and permitted to spring outwardly so as to admit the langed neel: 1 of the globe 1 which fits snugly against the member 5. The member 4 is then sprung forcibly inwardly to clamp against the opposite side of the globe neck and so as to bring the screw 10 into registry with the aperture 16. Said screw is then given a few turns in the forward direction so as to lock spring e in place. Loss oi' thescrew 10 is prevented by the permanent threaded engagement oi said screw with the terminal piece 14 on spring clamp 41.

n order to remove the globe as for cleaning or renewal the operation is reversed.

`The shape of the globe or shade is immaterial so long as it has a necl part such as 1 or the equivalent. When the clamp vis set in place the resilience of the wires-4L and 5 provide for suihcient play to prevent breakage under the stresses generated by changes in temperature. Moreover the globe is cushioned against destructive jarringsuch as may occur in buildings or elsewhere. in use the device is a great convenience and time saver, for while the globe may be set in place with one hand the locking arm t may be operated and set by a simple turning of screw v10 with the other hand.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim:

1. A holder of the character described comprising an.. annular' frame having a 'flange with three mutually spaced an radially disposedL threaded yapertures therein, screws :tor two of said apertures, a wire disposed arcuately between two of said apertures and secured by the screws therein, and a complementary wire disposed similarly on the opposite side of said trame and provided with a thumb screw carried thereby adapted and arranged for convenient attachment and release oit said end by engagement with the third aperture. f I

2. A holder of the character described comprising a rigid frame oi' annular shaper said other end also being bent baclr out-v wardly in the plane of said member and arranged to provide a yielding spring vpressure against the globe. neck. Signed at Chicago this 18 day of Feb.. 1922,

HARRY' E, RUTTLE. 

